These entries are queried from radb.net using whois, you can try my project getting these.
:AS33516 route: 199.20.43.0/24 descr: RCNMetro-Cust-Ogilvy origin: AS33516 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20090422 #21:44:31Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.20.44.0/22 descr: RCNMetro-Cust-Ogilvy origin: AS33516 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20090422 #21:45:09Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.20.44.0/24 descr: RR-RC-Ogilvy and Mather - NYC origin: AS33516 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.20.45.0/24 descr: RCNMetro-Cust-Ogilvy origin: AS33516 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20090508 #18:08:04Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.20.46.0/24 descr: RCNMetro-Cust-Ogilvy origin: AS33516 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20090508 #18:08:58Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.20.47.0/24 descr: RCNMetro-Cust-Ogilvy origin: AS33516 mnt-by: MAINT-AS27506 changed: Ronald.Wilson [at] rcnmetro.com 20090508 #18:09:36Z source: RADB last-modified: 2023-11-13T15:42:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source